Steam-generator



(No Model.) 3 Sheets-Sheet 1 T. F. MORRIN.

STEAM GENERATOR.

No 407,940. Patented July 30, 1889.

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No. 407,940. Patented July 30, 1889.

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(No Model.) 7 a Sheets-Sheet 3 T. P. MORRIN.

STEAM GENERATOR.

No. 407,940.. Patented July 30, 1889.

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UNITED STATES PATENT QFFICE.

THOMAS F. MORRIN, OF JERSEY CITY, NE\V JERSEY.

STEAM-G EN ERATOR.

SPECIFICATION forming part of Letters Patent No. 407,940, dated July 30,1889.

Serial No. 281,677. (No model.)

To all whom it may concern.-

Be it. known that I, THOMAS F. MoRRIN, a citizen of the United States,residing in Jersey City, Hudson county, New J ersey, have inventedcertain Improvements in Steam-Generators, of which the following is aspecification.

My invention relates to steam-gen erators of the class illustrated anddescribed in the patent granted to Morrin and Scott December 23, 188$,No. 309,727; and the object of my present invention is to improve theconstruction and operation of a generator of that general character.

My invention will be fully described here inafter, and its novelfeatures carefully defined in the claims.

In the drawings, which serve to illustrate myinvention, Figure 1 is asectional elevation designed to illustrate the invention. The left halfshows the casing of the generator in elevation, except at the upperpart, where a portion of it is broken away. The right half shows thecasing and interior generating elements in vertical mid-section up tothe waterlevel. Above the water-level these elements are in elevation.WVhere the casingis broken away at the left side the generating-cylinderat the water-level is shown in elevation and divested of thegenerating-tubes, and above this portion the left half of thegeneratingcylinder above the water-level is shown in verticalmid-section. Fig. 1v is a fragmentary sectional view of thegenerating-cylinders, taken in the plane indicated by dotted line 1 inFig. 1. Fig. 2 is a vertical mid-section of a part of the generatingcylinder and tubes below the water-level on a scale about four timesthat of Fig. 1. Fig. 3 is a similar sec tional view on a scale aboutone-half that of Fig. 2 of that portion of the generating cylinder andtubes above the water-level. Fig. 4 is a fragmentary sectional plantaken substantially on line A A in Fig. 1, showing the coil for heatingthe feed-water. Fig. 4c is an edge view of said coil. This coil is seenin transverse section at the right side in Fig. 1.

B is the generating-cylinder arranged vertically in the center of easingA.

O is the annular grate or fire-bed, and D the ash-box.

E is the circulation-cylinder set upright in the generating-cylinder,and open at the top but closed at its bottom. This cylinder E is of lessdiameter than cylinder B, and being set concentric therewith an annularspace or chamber e is left between them. The cylinder E rests at itslower end on brackets e, as seen in Fig. 1, or on other like supports incylinder B, and extends quite up to the water-level so of the generator.

F are the generating-tubes, which have the loop-like or horseshoeformillustrated in Fig. 4, when seen in plan. These tubes, where arrangedbelow the water-level, open into the annular space 6 between thecylinders B and E and are expanded at both their upper and lower ends inthe shell or plate of cylinderB;

but their upper ends are connected with the inner cylinder E by means ofextension-thimbles g, which extend across the annular space 6 and entersaid cylinder E. The flames and heated gases from the fire-bed pass upthrough and among the tubes F and escape at the chimney a.

I11 Patent No. 309,727, before referred to, the water flowed downward inthe inner cylinder of the generator, outward from this cylinder into thegenerating-tubes, upward through said tubes, impelled by the heat, andback into the annular chamber or space between the outer and innercylinders, while the current was upward in the outer cylinder. I findthat this construction'of the generator tends to produce an unequaltemperature of the water in the cylinders, the central column having alower temperature than the outer column. In the present construction Ihave changed the extension-thimbles g from the lower to the upper endsofthe generatingtubes F, thus compelling the water to flow from theannular chamber 6. out through the tubes and back into the innercylinder E, in which cylinder the steam rises and escapes into asteam-space above the water-line.

For convenience in constructing and mounting the inner cylinder E, Iconstruct it of sections, (see Fig. 2,) each of which is perforated toreceive a tier of eXtension-thimbles g, and these sections are furnishedwith suitable angle-pieces b b, which serve as stops or shoulderswhenthe sections are fitted together. It is not essential that the joints ofthe inner cylinder shall be steam-tight, and it greatly facilitates thesetting up of this cylinder in the construction of the generator to makeit in sections, which need not be fastened together. That part of thecylinder below the tubes may be made in a single section.

Above the water-level of the generator, and, consequently, above theinner tube E, the space Within the cylinder B forms the steamspace, andthe tubes F above the water-line are utilized as drying and superheatingtubes for the steam.

A little way above the water-level in the cylinder B is arranged aconical deflector 0, against which the saturated steam strikes in risinginto the steam-space from cylinder E. This causes the steam to give upthe water held in suspension, and the steam thus partially dried flowsthrough the tier of tubeapertures next below said deflector, "passes upthrough that tier of tubes, and enters the chamber again above thedeflector. .Above the deflector c the steam-space in the cylinder B isdivided into a number of chambers by partitions or diaphragins d d, theupper ends of one tier of generator-tubes discharging into each chamberat its upper part and the lower ends of another tier taking steam fromthe lower part of said chamber and carrying it up to the next chamberabove. Finally, the steam enters the steam-dome G at the top of thecylinder B, from which a steamsupply pipe K leads it to the engine orother point where it is required. The course of the steam through theseveral tiers of drying and superheating tubes F is clearly illustratedin Fig. 3, in which View only a few of the tubes of each tier are shownin place in order to render the illustration more clear.

Just above and preferably resting on the upper tier of radialsuperheating-tubes is the feed-water coil L, which is arranged in a flatspiral coil, with the spirals set quite close together, so that the coilacts as a baffle to the descent of the hot gases on their way to thechimney or flue. The water enters the coil at the inlet Z, flows roundand round through the spiral, which embraces the cylinder B, thence outthrough the radial branch 1*, down through the vertical branch Z, andenters the base of the cylinder B at 1 I arrange the branch Z' todeliver the feed-water to the cylinder B below the fire-bed in orderthat the feed-pipe may be convenient of 'access; but the feed-pipe mightpass through the shell of the cylinder B at the upper end of the latterand then pass down inside of said cylinder to some point below thewaterline. This change of position of the feedpipe will be obvious toany skilled workman.

Having thus described my invention, I claim- 1. A steam-generator havingan upright cylindrical generator, provided with tiers of double-branchedradial obliquely-arranged generating-tubes, both branches of which enterthe said generator, the upper ends extending farther into the interiorof said cylinder than the lower ends, and said tubes being arrangedabout the whole periphery of the cylinder, whereby an upward current isestablished atthe axis of the latter, as set forth.

2. In a steam-generator, the combination, with the uprightgenerator-cylinder and the lesser inner cylinder E, closed at itsbottom, of the double-branched generating-tubes arranged below thewater-level, the lower branches of which enter the generator-cylinder,and the upper branches of which connect with the said inner cylinder,substantially as described and shown, and for the purposes set forth.

3. In a steam-generator, the combination, with the uprightgenerator-cylinder and the double branched generating tubes, of theinner cylinder E, constructed of sections provided with angle-pieces, asb, at their ends, whereby said. cylinder may be conveniently built upwithin the generator-cylinder.

4. In a steam-generator, the combination, with the generator-cylinder,provided with diaphragms or partitions arranged above the Water-level,of the double-branched radial steam drying and superheating tubesarranged about the entire periphery of the cylinder, the lower ends ofthe tubes tapping said cylinder below one of said partitions and theupper ends tapping it above the same, as set forth.

5. The combination, with the upright generator-cylinder and the radialtubes connecting therewith, of the feed-water-supply pipe arranged inthe form of a fiat coil about the upper part of said cylinder above saidradial tubes and communicating at one end with said cylinder,substantially as set forth, whereby it forms a baihe and is exposed tothe heat of the ascending gases.

In witness whereof I have hereunto signed my name in the presence oftwosubscribing witnesses.

THOMAS Fl MORRIN.

Witnesses:

HENRY GoNNE'rT, J D. OAPLINGER.

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